in Proceedings of the 2nd FARAH Day, Faculty of Veterinary Medicine (2015) (2015)

Land cover and land use change has become a central component in current strategies for managing natural resources and in environmental change monitoring. This study aims to investigate the trend ... [more ▼]

Land cover and land use change has become a central component in current strategies for managing natural resources and in environmental change monitoring. This study aims to investigate the trend evolution of forest and pastoral areas in Rif Mountain, between 1984 and 2014, on Landsat imageries using remote sensing and GIS techniques. The forest and pastoral areas declined from about 4548 km² in 1984 to about 3588 km² by 2014, while the non-forest and non-pastoral areas increased by some 7,7% from 7912 km² in 1984 to about 8872 km² by 2014. Deforestation, expansion of agricultural lands, increase of rural population, overgrazing have been identified as the main factors that contribute to the forest and pastoral areas degradation. To ensure the sustainability of pastoral and forest resources, management and protection actions should be undertaken. [less ▲]

The objective of this study was to evaluate the effects of selenium (Se) enrichment of cereals on Belgian Blue bulls performance, on meat quality and chemical composition. Twenty three bulls were used in ... [more ▼]

The objective of this study was to evaluate the effects of selenium (Se) enrichment of cereals on Belgian Blue bulls performance, on meat quality and chemical composition. Twenty three bulls were used in the present study. Twelve bulls were offered a control diet containing Se at a basal concentration of 58 µg kg-1 of dry matter (DM) and the other 11 bulls given a diet containing 173 µg kg-1DM of Se by means of Se enriched spelt and barley. The Se enrichment of the diet did not affect either the growth performance, the slaughter data or meat quality (p>0.05). There were no effects of Se on tenderness, oxydative rancidity and water losses. However, there were some effects of Se enrichment on the meat chemical composition. The ether extract was decreased from 2.1 to 1.7% DM (p<0.05). There were also significant Se enrichment (p < 0.001) in Longissimus thoracis muscle (177 vs 477 ng g1-DM) and organs: liver (474 vs 1126 ng g1-DM) and kidney (4956 vs 5655 ng g1-DM), Under such condition, the human consumption of a piece of such meat or liver can cover a large part of the recommended daily Se intake estimated between 30 to 57%. [less ▲]

This study aims to measure under barn conditions the emissions of NH3, N2O, CH4 and CO2 associated with gestating sows (trial 1) and fattening pigs (trial 2) fed either a control diet (CTD) based on ... [more ▼]

This study aims to measure under barn conditions the emissions of NH3, N2O, CH4 and CO2 associated with gestating sows (trial 1) and fattening pigs (trial 2) fed either a control diet (CTD) based on cereals or a high-fibre diet (HFD) based on sugar beet pulp (SBP). Three successive batches of 10 Belgian Landrace gestating sows were used for trial 1. Two successive batches of 24 Pi etrain Belgian Landrace fattening pigs were used for trial 2. Animals were kept on slatted floor. The gas emissions were measured by infrared photoacoustic detection and expressed per day and per livestock unit, equals to 500 kg body weight. Similar trends were observed for both animal types. With HFD, the NH3 emissions were reduced (27.2 vs. 36.5 g for the gestating sows, P < 0.001; 23.2 vs. 45.0 g for the fattening pigs, P < 0.001) but the CH4 emissions were increased (41.5 vs. 21.0 g for gestating sows, P < 0.001; 37.9 vs. 27.2 g for fattening pigs, P < 0.001). The fibre content of the diet had not significant impact on N2O emissions (around 1.4 g for gestating sows and 2.1 g for fattening pigs, P > 0.05), and on CO2 emissions (around 6.0 kg for gestating sows and 9.1 kg for fattening pigs, P > 0.05). Most of manure parameters did not statistically differ regarding the treatment. Reproductive performance and body condition of the sows were not affected by the diet. However, growth performance and carcass traits of the HFD-fed fattening pigs were deteriorated compared to CTD. [less ▲]

in Proceedings of the 1st FARAH Day, Faculty of Veterinary Medicine (2014) (2014)

Rangelands represent the most important feed sources for goats in the Northern Morocco. Land cover and land use change has become a central component in current strategies for managing natural resources ... [more ▼]

Rangelands represent the most important feed sources for goats in the Northern Morocco. Land cover and land use change has become a central component in current strategies for managing natural resources and in environmental change monitoring. For a sustainable and integrated development of pastoral and forest resources, it is essential to establish a resource assessment system. The first step of this system will be to discover the trend of development of forest areas in Rif Mountain between 1984 and 2011 from satellite images and create a pastoral map of Chefchaouen region by using remote sensing and geographic information system (GIS). [less ▲]